The Daijisen (大辞泉, "Great fountain of knowledge (wisdom)/source of words") is a general-purpose Japanese dictionary published by Shogakukan in 1995 and 1998.
Shogakukan intended for the Daijisen to directly compete with Iwanami's popular Kōjien desktop dictionary, which was a bestseller through three editions (1955, 1969 and 1983).
Other Daijisen editors included Akihiko Ikegami (池上秋彦), Hiroshi Kaneda (金田弘), and Kazuo Sugizaki (杉崎一雄).
Daijisen improvements include visually appealing designs, more contemporary usage examples, and some helpful layout features.
The contents of the Daijisen have been used in other dictionary sites, including: The database versions are marked for April, August, December of every year, with updates delivered approximately every 4 months.
Not only is the same Tokyo University professor listed as editor – though it is important to note that the names appearing on the covers of Japanese dictionaries often have little relation to the people who actually did the work; one case in point being Koujien, even the most recent editions of which list as editor one 新村出 Shinmura Izuru, who has been dead since 1967 – but the definitions in Daijisen follow closely those of Daijirin as well.